U. S. NATIONAL MUSEUM 



BULLETIN 173 PLATE 5 



Windmills. 



1. Monitor windmill, 1881 (model; U.S.X.M. no. 309687). See p. 11. 

 2. Moses G. Farmer wind-electric generator, 1880 (model; U.S.N.M. no. 1819S5). 



See p. 1 V 



